Strong Middle FE Engineer

We seek a talented Strong Middle FE Engineer to join our team and help build a humanitarian transparency platform. This role involves designing and developing user interfaces for both a desktop web application and a Progressive Web App (PWA) for mobile, working as part of a cross-functional team.

 

🧙‍♂️ In This Role You Will

• Design, build, and maintain responsive UI components for desktop and mobile (PWA).
• Implement offline-first architecture using Service Workers, IndexedDB, and client-side caching strategies.
• Build robust data synchronization logic between client and server, including conflict resolution and offline queue management.
• Integrate REST APIs into the frontend layer.
• Contribute to architectural decisions for both web and mobile experiences.
• Ensure offline-first behavior and performance in low-connectivity environments.
• Write clean, maintainable, and testable frontend code.
• Document your work and support knowledge sharing within the team.

🎯 You May Be Interested If

• You enjoy building interfaces that are both functional and intuitive.
• You care about performance, accessibility, and real-world usability.
• You're excited to collaborate in a remote, cross-functional environment.
• You value autonomy, clear communication, and working in a supportive, small-team setting.
• You thrive in an environment that encourages continuous learning and self-improvement.

👌 Role Requirements

• 3+ years of experience in frontend development with React.
• Strong proficiency in TypeScript.
• Solid experience building and deploying Progressive Web Apps (PWA) to production.
• Hands-on experience with offline-first architecture, Service Workers, and Workbox (or equivalent).
• Practical experience with client-side storage solutions: IndexedDB (Dexie.js, idb, or similar), Cache API, localStorage.
• Experience consuming REST APIs and managing application state.
• Solid understanding of Web APIs relevant to PWAs: Push API, Notifications API, Background Sync, Storage API.
• Familiarity with Docker-based development environments.
• Proficiency with Git and standard development tooling.
• English proficiency at B1 level or higher.

Nice to have:

• Experience with hybrid app frameworks (Capacitor, Ionic) for wrapping PWAs into native iOS/Android apps.
• Experience with TanStack Query (React Query) for server state management and caching.
• Experience with React Native for native mobile app development.
• Familiarity with data visualization libraries (e.g. Chart.js, D3, Recharts).
• Experience with GIS or map-based UI components (e.g. Leaflet, Mapbox).
• Experience with WebSockets or real-time data synchronization (Socket.IO , native WebSocket, SSE).
• Familiarity with end-to-end testing tools (Playwright, Cypress).
• Experience working with design systems or component libraries.

💻 Working Conditions

• Employment Type: Full-Time
• This is a fully remote position with the entire team across Ukraine.
• 20 working days of paid vacation per year.
• The team collaboratively defines deadlines, ensuring a balanced and manageable workload. The focus is on delivering commitments on time.
• Flexible working hours to promote a healthy work-life balance.